Partially add migration support

bungee/src/main/java/me/lucko/luckperms/LPBungeePlugin.java

@@ -126,6 +126,11 @@ public class LPBungeePlugin extends Plugin implements LuckPermsPlugin {
         return getDescription().getVersion();
     }
 
+    @Override
+    public Type getType() {
+        return Type.BUNGEE;
+    }
+
     @Override
     public File getMainDir() {
         return getDataFolder();
@@ -162,6 +167,24 @@ public class LPBungeePlugin extends Plugin implements LuckPermsPlugin {
         return Collections.emptyList();
     }
 
+    @Override
+    public Object getPlugin(String name) {
+        return getProxy().getPluginManager().getPlugin(name);
+    }
+
+    @Override
+    public Object getService(Class clazz) {
+        return null;
+    }
+
+    @Override
+    public boolean isPluginLoaded(String name) {
+        return getProxy().getPluginManager().getPlugins().stream()
+                .filter(p -> p.getDescription().getName().equalsIgnoreCase(name))
+                .findAny()
+                .isPresent();
+    }
+
     @Override
     public void runUpdateTask() {
         doAsync(new UpdateTask(this));